Apparatus for the manufacture of ice



. A. J. ZILKER'. Apparatus for the Manufacture of Ice.

No 230,102. Patented July 13, 1880.

WITNESSES: INVBNT OR:

ATTORNEYS- UNITED STATES PATENT ANDREW J. ZILKER, OF AUSTIN, TEXAS.

SPECIFICATION forming part of Letters Patent No. 230,102, dated July 13,1880.,

Application filed November 13, 1879.

To all whom it may concern:

Be it known that I, ANDREW J. ZILKER, of Austin, in the county of Travisand State of Texas, have invented a new and Improved. Apparatus for theManufacture of Ice, of which the following is a specification.

Figure 1 is a plan of the device. Fig. 2 is a sectional elevation online w m, Fig. 1.

Similar letters of reference indicate corresponding parts.

The object of the invention is to provide means by which artificial icemay be detached in unbroken blocks, as hereinafter described.

In operating with the apparatus it has been found that it is difficultto detach the ice from the stationary metal sheets without breaking theice and thereby diminishing its commercial value.

In the drawings, A A represent metallic sheets, set on either side ofthe coils of pipe B in the tank 0, that contains only fresh water, thesaid sheets A A being held in position by the yokes D D, that engage inthe ears E E, or by any other convenient device, and these parts,hereinbefore described, are like those shown and described in myapplication for a patent allowed September 8, 1879.

In my present improvement the metallic sheets F F are set outside of thesheets A A, and in contact with them, and are held in place by the bentend sheets, G G, at their ends, which sheets G G, with edges bent so asto form flanges b, also serve to prevent the ice from forming againstthe ends of the tank 0 and form spaces a for the admission of steam. 3 5

When the ice is formed between the sheets F F by the circulation ofammonia gas or other agent passing through the coils or pipes B, steamis introduced into the spaces between the sheets G" G and the ends ofthe tank 0, whereby the sheets G G may be loosened from the ice andremoved, and the sheets F F can then easily be withdrawn from the tank 0with the blocks of ice adhering to them, and on being exposed to the airthe sheets F F soon loosen from the ice, and can be returned, togetherwith the sheets G G, to the tank 0.

Should the sheets F and A freeze together in the operation of ice-makingthey may be readily separated from each other by wedges.

It will be seen that by this simple device of double sheets or removablesheets it becomes a simple matter to obtain large and unbroken blocks ofice from tanks in which ice is artificially made.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The removable metallic sheets F G, in combinationwith the stationary sheets A, substantially as and for the purposedescribed.

ANDREW J ZILKER.

Witnesses J. S. OROZIER, W. F. WRIGHT.

